Oil filter



Juegl 1, 1940. R. NfBuRcKHALTER 2,203,668

oIL FILTER Filed No`v. 14, 19:56

2 Sheets-Sheet l vnf.

Waieiiied'liiihe il, i940? artists itohert Nash Burclihaltc r, Michigan City, land., assigner to Michiana Products iorporation, ltliichd @laluna The principal object oi this invention is to provide a simple and cheap filter construction of high capacity that is easy to install arid replace.

Further ohjects and advantages oi the iriveutioi'i` a will appear as the disclosure proceeds and the description is read in connection with the accompanying drawings, in which Fig. l is a vertical `sectioh through the preierred embodiment of the invention, mounted on im a base fixed to an chaine castles. aud

Fig. 2 is a vertical section of the same embodiment mounted on an adapter, and replacing illter elements of an earlier construction.

However, it is contemplated that the irri/'elution` il will be embodied in other forms and put to other` uses within the scope oi the claims.4 i i The filter casing shown includes a cylindrical barrel"`lt of sheet metal having upper and lower heads li and it, crimped about the ends oi the barrel, as indicated at lt, arid solderedwelded. or otherwise made rast.

Just inside the heads il and it are perforated heads lll aud lll cohcavo-conveir in shape and oi a diameter approximately equal to the inside dirti ameter of the barrel it, These heads cooperate with the heads il aud it to iorm small chambers i6 and ll'. Between the heads M and I5 is a mass it of fibrous filtering material composed oi shredded cotton, wool,` a mixture oi wool and cottim,` or cattle hair and cotton, or cattlehair and asbestos ber, or `cotton arid mineral wool, or various other brous materials that` will he selected according to the particular filtration to be done. For cucine oil used iuV internal com :it bastion chaines shredded cotton is preferable, as a rule, 'llhe density will he about richt for such luhricatiiie' oil when the perforated heads caert erioush pressure ou the ulterior material to develop a small amount oi resiliency.

its shown, the oli eaters the hlterias terial through atube it, which extends tlirouah the `perforated head it cruelly alone the barrel to a `point substantially haii way between the ends oi the mass ci illterina material where it termifait hates in a slightly reduced end it adjacent to which there are pericrations il. The oil hows out from the tube radially and divides itseli into two streams, one moi/ine downwardly aud the other moving upwardly, as indicated by the arsa rows.

mass oi hltering material chers a very great area to the oil to be hltered and, therefore, allows for easy idow while iurnishin volume oi oil.

after passing through` approximately ohe-hali e capacity for a Lcreat (iCi. 21o-131) From this it will be apparent that the.

of the massief filtering material, the filtered oil reaches one of the chambers it or il. Those chambers are connected by a tube it, here shown as extending entirely through the mass of filter ing material it, and through the heads it and it. d Oil that has reached the chamber il passes'clown through the tube i2 and joins the other oil in the chamber it. n

Filters o'f this general character embodyingr the invention may be mounted in a great variety of iii ways. As shown in Fig. l, the head it is provided with a threaded necltltt, received in a corresponding threaded socketit against a suitable gasket td. The socket 2t is iormedas part of a hase casting it. secured to the engine casting il it with a` gasket it imposed between to make an oil-tight joint, The engine casing has a passage it leading from the familiar oil pump to a cored passage llt in the base it, which communicates with a passage di in the engine casing leading to 20 the bearings and also a passage llt leadingA through the base to a nipple til, into 4which the lower epd ofthe tube it is tightly fitted and made fast.

The base it has a chamber muriicatioh with the neck it and also a passage ilileadina to a passage it in the engine casing by which the oil is returned to the crank case. The passage it is connected with the passage fit by a short lay-pass il guarded by a valve 3d 30 urged to its seat ttl by a spring til.

in a normal operation oi the device shown in lilie. i, oil .from the pump reaching the cored passage itil divides into two streams, one going to the leit through il to the bearings, and the other B5 soins to the right through 3i, into the tube i9, thence into the intermediate portion of the filtering material, where it divides into two streams, one soins to the chamber it aud the other going to the chamber il' through approximately half 40 or the filtering mass. The .oil from the chamber i il passes down through the tube 2i to the chainber lli `and there the combined streams pass out through the passage :it to the crank case. Should the vpressure in the line to the bearings 40 eaceed the selected limit, the by-pass or limiting valve it will open and permit a portion of the oil to return to the crank case through the pas- Sarg@ 50 The filter can be made ih a great many forms,

and the form shown can be assembled in a variety oi ways. As showin, the tube il has a spun head ill at the lower cud heiore assembly and after reaching the iruisitiori shown, theupper end is 55 tti in open com- 2o struck with a suitable tool to set over approximately one-half, as shown at 42.

It is preferable to pack the filtering material in the' barrel before the tubes i9 and 22 are inserted. Their entry into the fibrous mass will be made very easy by using as a pilot an air jet of slightly larger diameter than the tubes I9 and 22. The operation of forming the holes for the tubes can be separate, in which case suitable pins will be insei-ted immediately to hold the fibrous material displaced, and prevent the openings being closed up before the tubes can be entered.

Fig. 2 shows this preferred embodiment ofthe filter equipped with an adapter 43, by which the lter is readily mounted in a base 44 of a type heretofore in common use with engine filters made by the Michiana Products Corporation; see Burckhalter et al., No, 2,031,589, Feb. 25, 1936.

One characteristic of the base 4 is a groove 45 concentric with a threaded nipple 45, the latter being in communication with the outlet 55 to the bearings.

The adapter has a cylindrical flange 41 corresponding to the groove 45 and above that a curved wall 48 forming a sort of chamber 49. On the upper side the adapter has a threaded socket 50 foi' cooperation with the threaded neck 23 of the filter proper.

In order to fasten the adapter 43 to the base 44, it is provided with a central opening 5|, to receive a hollow bolt 52 threaded into the socket 46, and forcing the flange 41 against a gasket in the groove 45. The head 53, of the bolt 52, has a socket 54 into which the tube 1,9 is fitted tightly and made fast. The socket 54 is really a center bore communicating with a central passage 58 leading to a cross bore 59, establishing communication with the chamber 49.

The adapter in this instance is provided with an outlet port 56 for connection with the oil piping 51, leading to the bearings or to the crank case; and upon placing the adapter on the base 44 it can be turned to locate the port 56 in any direction suited to the conditions before the bolt 52 is screwed down.

The base'l 44 is provided with an inlet 6 0 lfor oil from the pump and that inlet communicates with the chamber 49 in the adapter. The oil from the chamber 49 runs through the cross bore 59 into the central passage 58, thence through the tube I9 and the filter, as before described, back to the neck 23, which is in communication with the outlet 56, leading to the piping 51.

Should the filter clog due to cold or dirt, the by-pass valve 62 will open and let oil go directly from the inlet passage 50 to the outlet passage leading to the bearings.

This is just one form of adapter suited to one set of connections for an earlier type of filter. Those skilled in the art will readily make other forms suited to other conditions.

I claim as my invention:

1. A filter comprising, in combination, a base having a threaded socket and having intake and outlet ports, a filter member comprising a sheet metal barrel having sheet metal end walls, one of said end walls having an integral externally threaded open neck portion for engaging said socket and communicating with said outlet port, perforated false heads adjacent to the ends of the barrel, a mass of fibrous filtering material substantially filling the space between the heads, a tube communicating with said intake port and extending' through said neck portion into and terminating in the central portion of the mass end walls of said barrel and wholly contained within said barrel and in communication with said neck portion and said outlet port, said' firstnamed tube being permanently connected to said base and 'extending axially into'said mass whereby said barrel may be readily removed by unscrewing said neck portion from said socket and lifting the barrel from said .first-named tube.

2. A filter comprising a sheet metal barrel closed at one end and having at its other end a sheet metal end wall provided with an open integral attaching portion,` perforated false heads, one adjacent to each end of the barrel, a mass of fibrous filtering material filling the space between the heads, said mass of filtering material having an elongated opening extending upwardly from its lower portion and terminating approximately at its central portion for receiving a tube, said tube being adapted -to extend through the opening in the attaching portion and into and terminating in the central portion of the mass and in contact therewith for delivering unfiltered oil into the central portion of the mass, and another tube extending through the mass and the heads for conducting filtered `oil through said mass, said last named tube being contained within said barrel and having its ends open and spaced inwardly from the end walls of said barrel and in communication with the attaching portion whereby filtered oil above the upper false head may flow downwardly through said last named tube through said mass and into the attaching portion.

3. A filter comprising, in combination, a base having intake and discharge ports, a sheet metal barrelvhaving a closed end and having an open end mounted on said base, a tube rigidly connected to the intake port vand extending upwardlytherefrom through said open end, a recess in said base in communication with said discharge port, perforated false heads within said barrel adjacent to the ends thereof, a mass of fibrous filtering material substantially filling the space between said heads, said mass having an axial opening receiving said tube, a second tube laterally of the axis ofthe barrel extending through said mass and heads and having its ends open and spaced inwardly from the ends of the barrel for conducting filtered oil from said recess, said first named tube terminating at substartially the central portion of said mass whereby oil to be ltered will be delivered to the central portion of said mass and a portion thereof will pass upwardly through the upper portion of said mass above the upper head within said barrel and then downwardly through said second named tube to said recess and the remaining oil to be filtered will pass ,downwardly through said mass and through said open end and into said recess, and means for rigidly securing said barrel to said base whereby said barrel may beremoved for replacement by first releasing said means and then lifting the same upward from sai'd first named tube.

4. A filter comprising a sheet metal barrel having a closed upper end and a lower -open above the upper head through said open end to end, upper and lower perforated false heads mass and heads laterally of said axial opening and having its ends open and distorted beyond said false heads for preventing its removal from said heads, said tube communicating with the opening in said lower end. Y i

5. An'adapter for use in attaching a lter member to a base comprising a,body portion having an axial opening therethrough for the i reception of a connector member, a circular flange extending outwardly from said body por- 0 tion for engaging in a circular groove in said Vbase and adapter, said `base and for forming a chamber between said downwardly and outwardly extending passage laterally of said. axial opening for discharging filtered oil therethrough,` and said body portion `being provided with an outwardly extending circular internally threaded flange on the side op-` posite said circular iiange casing to said connector.

6. A filter comprising a base having a threadediopening surrounded by a` circular groove, an

adapter having a central opening aligned with` the opening in the base and a flange seated in the circular groove and forming with the base an oil chamber,"a ported connectorelement engaged with the threaded opening in the base and making the adapter fast on the base and having its ports in communication with said chamber, a discharge oil passage in said adapter, a filter casing mounted on said adapter in communication with said discharge passage and having` a passage in communication with said chamber, and filter material in said casing.

7. A alter comprising in combination a base having an opening surrounded by a circular body portion having a for attaching a lter groove, an adapter having a central opening aligned with the opening in the base and a flange seated in the circular groove, a ported connector element penetrating the opening in the adapter and having one end secured in the base opening and its other end overlying the margins of the opening in the adapter, said connector element making the adapter fast on thev base, a filter casing carried by the adapter opposite the flange thereof, and means including a passage through said connector for conducting oil to and from 'said filter casing.

8. A filter comprising in combination a base having a threaded opening surrounded by a circular groove, an adapter having a central opening aligned with the opening in the base and Aa flange seated in the circular groove, a ported connector element penetrating the opening in Y the adapter and having one end threaded in ythe base opening and its other end overlying the margins of the opening in the adapter, said connector element being adapted to be turned down with the named threaded parts in engagement to compressively seat the adapter flange in the circular groove oi' the base, a lter casing carried by the adapter opposite the flange thereof, and passages through said base, adapter and connector element for conducting oil to and from said filter casing. l

9. A filter comprising in combination a base having an opening, an adapter having an opening aligned with the base opening, complemental flange and groove means carried by the base and adapter and adapted to be engaged together, a `ported connector element engaged with the named openings and adjustably secured in one of them to make the adapter fast on the base, a .filter casing carried bythe adapter opposite said flange and groove means, means including a passage through said connector for conducting contaminated oilto said filter, and a passage in said adapter for conducting filtered oil from i said filter casing. 

